Please help, I need to know quickly:

1. Describe why diffusion is classified as a method of passive transport.

2. Explain how glucose is able to pass through the cell membrane.

Explanation:

1- in passive transport there are 3types. One is diffusion, in which a molecule from the area of higher concentrations moves towards the area of lower concentration. Because diffusion is a type of passive transport that's why it is included in the method of it.

2- glucose is the simplest form of sugar. It moves from the cell membrane through the process of diffusion. Outside the cell level of glucose or it's concentration is high and inside the cell it's concentration is low. Though diffusion process glucose moves from the area of higher concentration to the lower concentration.

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;